Remote code execution in Microsoft Word for Android

1) Input validation error

EUVDB-ID: #VU28924

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1223

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected device.

The vulnerability exists due to insufficient validation of user-supplied input when processing URLs. A remote attacker can trick the victim to open a specially crafted URL and execute arbitrary code in the system.

Successful exploitation of the vulnerability may result in full device compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Word for Android: 16.0.8730.2050 - 16.0.12730.20214

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1223

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.